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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Windows.Forms;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace Hello_World
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{
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public partial class StartForm : Form
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{
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private Timer timer;
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public StartForm()
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{
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InitializeComponent();
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IntPtr hWnd = API.FindWindow(this.Text);
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if (hWnd != IntPtr.Zero)
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{
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System.Diagnostics.Debug.WriteLine("hWnd ist nicht null");
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this.MaximizeBox = false;
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this.MinimizeBox = false;
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this.Focus();
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SHAPI.SetForegroundWindow(hWnd);
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SHAPI.FullScreen(hWnd);
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}
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}
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}
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public class API
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{
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[DllImport("coredll.dll", EntryPoint = "FindWindow")]
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private extern static IntPtr FindWindow(string lpClassName, string lpWindowName);
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public static IntPtr FindWindow(string windowName)
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{
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return FindWindow(null, windowName);
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}
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}
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public class SHAPI
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{
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public const int SHFS_SHOWTASKBAR = 1;
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public const int SHFS_HIDETASKBAR = 2;
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public const int SHFS_SHOWSIPBUTTON = 4;
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public const int SHFS_HIDESIPBUTTON = 8;
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public const int SHFS_SHOWSTARTICON = 16;
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public const int SHFS_HIDESTARTICON = 32;
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[DllImport("aygshell.dll")]
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private extern static bool SHFullScreen(IntPtr hWnd, int dwState);
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public static bool FullScreen(IntPtr hWnd)
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{
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return SHFullScreen(hWnd, SHFS_HIDESTARTICON | SHFS_HIDETASKBAR);
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}
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[DllImport("coredll.dll")]
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internal static extern int SetForegroundWindow(IntPtr hWnd);
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}
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}
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下面的代码仅仅隐藏开始菜单但程序退出后会重现
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Windows.Forms;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace Wm5ppc
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{
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public partial class Form1 : Form
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{
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public Form1 ()
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{
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InitializeComponent ();
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this.MinimizeBox = false;
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}
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private void Form1_Activated (object sender, EventArgs e)
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{
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IntPtr hWnd = this.Handle;
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SHAPI.FullScreen (hWnd);
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}
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}
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public class SHAPI
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{
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public const int SHFS_SHOWTASKBAR = 1;
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public const int SHFS_HIDETASKBAR = 2;
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public const int SHFS_SHOWSIPBUTTON = 4;
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public const int SHFS_HIDESIPBUTTON = 8;
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public const int SHFS_SHOWSTARTICON = 16;
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public const int SHFS_HIDESTARTICON = 32;
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[DllImport ("aygshell.dll")]
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private extern static bool SHFullScreen (IntPtr hWnd, int dwState);
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public static bool FullScreen (IntPtr hWnd)
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{
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return SHFullScreen (hWnd, SHFS_HIDESTARTICON);
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}
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}
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}

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如果想实现程序完全全屏,可以设置Form的WindowState属性为Maximized,并且移除MainMenu1控件
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